Home / 3,331.24-4,995.30-990.38

Finding the Fourth Proportional to 3,331.24, 4,995.30 and 990.38

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Solution

The fourth proportional to 3,331.24, 4,995.30 and 990.38 is: 1,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,331.24 : 4,995.30 = 990.38 : x
  2. Step 2: Convert to fraction form
    3,331.24/4,995.30 = 990.38/x
  3. Step 3: Cross multiply
    3,331.24x = 4,995.30 × 990.38
  4. Step 4: Simplify right side
    3,331.24x = 4,947,245.21
  5. Step 5: Solve for x
    x = 4,947,245.21/3,331.24
  6. Step 6: Final answer
    x = 1,485.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.